Albert Barnes Commentary 1 Kings 5:3

"Thou knowest how that David my father could not build a house for the name of Jehovah his God for the wars which were about him on every side, until Jehovah put them under the soles of his feet." — 1 Kings 5:3 (ASV)

Solomon’s assumption that Hiram knew of David’s plan has not appeared in the preceding history, but it is consistent with 1 Chronicles 22:4.